Question

What is the error that occurs when the number of bits is not sufficient enough to represent the analog voltages?

(a) Data error

(b) Sampling error

(c) Acquisition error

(d) Quantization error

I have been asked this question during an interview for a job.

This intriguing question comes from Data Conversion in portion Digital Communication Techniques of Avionics

Answer 1

Right answer is (d) Quantization error

Easiest explanation: When the number of bits is not sufficient enough to represent the analog voltage levels, quantization error occurs. The greater the number of bits, the greater the number of increments over the analog range and the smaller the quantizing error.